Fair, I tend to include post-editing in my fee (though if it is extensive editing charge more) and then add on travel expenses.
Either contact the venue, promoters, someone at the label or the band themselves. Interviews and whatnot I've got before have either been from talking to he musicians on facebook or whatever, or finding an email of someone who works at their label. You can normally find those on their websites.

Maximise your online presence; get your work up on places like devianart, flickr etc and make networking pages on places like MySpace, Facebook and even Twitter. Myspace and Facebook in particular are good for connecting with bands. Stick some work up there, make sure its as high wuality as possible. Having a reputation helps too, so try and get photopasses for gigs with decent lineups. If people see you've photographed some well known bands they'll take you more seriously. Whats your fee at the moment?

http://www.facebook.com/pages/Sam-Wr...22806487780403 <--- photo page, click it, and maybe like????
The horror that was that video made my bowels explode in an inhuman fashion that scared me, my dog, and the bird in the tree outside my room window-Insackclothandashes